Autocad Plant 3d Iso Symbol Skey May 2026

ISO Symbols

In AutoCAD Plant 3D, the relationship between and SKeys is a fundamental concept that drives the automatic generation of isometric drawings.

1. Consistency Across Projects

• Open a new drawing.
• Draw the top-view symbol: a square rotated 45° (valve body) with a small circle (actuator) on top.
• Save as PneuBallValve.dwg in your project's Isometric\Symbols\ folder.

1. 3D Model Definition: When you place a component in the 3D model, that component has an SKey property defined in its spec or catalog.
2. Isometric Generation: When you run the "Create Isometric" command, the software reads the pipeline. It encounters a component and reads its SKey.
3. Symbol Substitution: The software looks at the Iso Symbol Map. It finds the SKey in the list and replaces the 3D geometry with the designated 2D block/symbol in the generated drawing.

Change log & versioning

Where Are ISO Symbols Stored?